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प्रश्न
Give reason for the following:
Atrial wall is less muscular than the ventricular wall.
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उत्तर
Atrial wall is less muscular than the ventricular wall because the major function of atria is
to receive blood from the body and pump in into very next ventricles. While the ventricles
pump the blood out of the heart. Right ventricle to the lungs and the left ventricle to all the
body parts.
संबंधित प्रश्न
Match the statements in Column A with those in Column B:
What is Endothelium?
Multiple choice questions. Tick ( ✓ ) the correct choice:
Human heart has
Multiple choice questions. Tick ( ✓ ) the correct choice:
The blood vessels in which blood goes away from the heart to different body parts are
True or false:
People with blood group ‘O’ are called universal recipients
Match the statements in Column A with those in Column B
| Column A | Column B | ||
| 1 | Heart | a | Movement of materials |
| 2 | Food and oxygen | b | Channels for transport in man |
| 3 | Carrier of oxygen | c | A living pump |
| 4 | Circulation | d | Materials needed by every living being |
| 5 | Arteries and veins | e | Red blood cells |
Define the Arteries.
Name the main parts of the circulatory system
Given below is the simplified pathway of the circulatory system:
(i) Name the blood vessels marked 1 to 8.
(ii) Name the chamber of the heart which:
(a) Receives blood from ‘1’.
(b) Pumps blood into blood vessel ‘8’.
(iii) Mention two structural differences between blood vessels ‘7’ and ‘2’.
Draw well labeled diagrams of part Artery and Superior vena cava to show the structural.
